package July;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author:gao
 * @date:2020/7/5
 * @time:8:17
 * @version:0.0.1
 * @description:none
 */

public class IsMatch {
    public static void main(String[] args) {
        SolutionDP solution = new SolutionDP();
        System.out.println(solution.isMatch("adceb","*"));
    }
}

//超时的正则
class SolutionFive {
    public boolean isMatch(String s, String p) {
        p = p.replace('?','.');
        p = p.replace("*",".*");
        Matcher matcher = Pattern.compile(p).matcher(s);
        return matcher.matches();

    }
}

//题解dp
class SolutionDP {
    public boolean isMatch(String s, String p) {
        int m = s.length();
        int n = p.length();
        boolean[][] dp = new boolean[m + 1][n + 1];
        dp[0][0] = true;
        for (int i = 1; i <= n; ++i) {
            if (p.charAt(i - 1) == '*') {
                dp[0][i] = true;
            } else {
                break;
            }
        }
        for (int i = 1; i <= m; ++i) {
            for (int j = 1; j <= n; ++j) {
                if (p.charAt(j - 1) == '*') {
                    dp[i][j] = dp[i][j - 1] || dp[i - 1][j];
                } else if (p.charAt(j - 1) == '?' || s.charAt(i - 1) == p.charAt(j - 1)) {
                    dp[i][j] = dp[i - 1][j - 1];
                }
            }
        }
        return dp[m][n];
    }
}

